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Warmest sea in Argentina in September

167 coastal locations in Argentina ranked by their typical September sea temperature. Region-wide average in September: 10.8°C. The top of the list is where to find the warmest swimming this month.

Warmest in September

Puerto Iguazu

17.0°C September mean in Argentina

Regional September average

10.8°C

across all 167 coastal locations in Argentina

Vs annual mean

-3.3°C

below the year-round regional average

What the Argentina sea feels like in September

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

Argentina monthly average 9.7°C to 18.7°C
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  • Warmest month February 18.7°C
  • Coldest month August 9.7°C
  • Annual mean 14.1°C
  • Months above 20°C 0 of 12

Where September fits in the year

September sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Argentina month rankings:

Argentina sea temperature map (live)

The map shows today's latest reading at every Argentina location. The list below is based on the typical September mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Argentina locations in September

Sorted by the typical September mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location September mean
1 Puerto Iguazu 17.0°C
2 Isla Martín García Buenos Aires 16.7°C
3 Baradero 16.7°C
4 Gualeguaychu 16.7°C
5 Mar Chiquita Lake 16.7°C
6 San Roque Lake 16.7°C
7 Villa Carlos Paz 16.7°C
8 Isla Martin Garcia Buenos Aires Province 16.6°C
9 Colon Entre Rios 16.6°C
10 Concepcion del Uruguay Entre Rios 16.6°C
11 Concordia 16.6°C
12 Buenos Aires 16.6°C
13 Olivos 16.6°C
14 Quilmes 16.6°C
15 Retiro 16.6°C
16 Tigre 16.6°C
17 Ciudadela 16.4°C
18 Ensenada 15.8°C
19 Punta Lara 15.8°C
20 Chascomus 15.5°C
21 Puerto La Plata Provincia de Buenos Aires 15.4°C
22 Termas de Rio Hondo 15.3°C
23 Punta Indio 14.7°C
24 Canal Punta Indio (West) Buenos Aires Province 14.7°C
25 Mina Clavero 14.6°C
Show 25 more ▸
26 Punta Piedras Buenos Aires 14.4°C
27 Canal Punta Indio (East) Buenos Aires Province 14.4°C
28 Corrientes 14.3°C
29 Cabo San Antonio Provincia de Buenos Aires 13.8°C
30 Punta Rasa 13.8°C
31 Las Toninas 13.7°C
32 San Clemente del Tuyu 13.7°C
33 Aguas Verdes 13.3°C
34 Costa del Este 13.3°C
35 La Lucila del Mar 13.3°C
36 Mar de Ajo 13.3°C
37 Mar del Tuyu 13.3°C
38 San Bernardo 13.3°C
39 Santa Teresita 13.3°C
40 Nueva Atlantis 13.0°C
41 Punta Medanos 13.0°C
42 Mar del Ajo Provincia de Buenos Aires 12.9°C
43 Villa Gesell 12.3°C
44 Mendoza Province of Mendoza 12.2°C
45 San Rafael Province of Mendoza 12.2°C
46 Carilo 12.2°C
47 Pinamar 12.2°C
48 Valeria del Mar 12.2°C
49 Mar Azul 12.0°C
50 Mar de las Pampas 12.0°C

Coldest 10 in Argentina in September

Same data the other way. Helpful if you want to know which Argentina coasts to avoid for swimming in September.

# Location September mean
1 Weddell Sea Argentine Antarctica -1.8°C
2 Ronne Ice Shelf Argentine Antarctica -1.8°C
3 Signy Island Argentine Antarctica -1.7°C
4 Scotia Bay Argentine Antarctica -1.6°C
5 Caleta la Mision Tierra del Fuego 3.7°C
6 Rio Grande 3.9°C
7 Bahía San Sebastián Tierra del Fuego 4.0°C
8 Tierra del Fuego 4.1°C
9 Rio Gallegos 4.4°C
10 Cabo Virgenes Santa Cruz 4.5°C

More on this region